BMS-564929 exhibits a potency (EC50, calculated as the concentration at which 50% of the maximum stimulatory effect of DHT is achieved) of 0.44±0.03 nM in the C2C12 myoblast cell line. In the PEC cell line, the EC50 for BMS-564929 is 8.66±0.22 nM. BMS-564929 is more than 1000-fold selective for AR vs. estrogen receptors (ER) α and β, glucocorticoid receptor (GR), and mineralocorticoid receptor (MR), and approximately 400-fold selective vs. progesterone receptor (PR). BMS-564929 shows no measurable activity in functional transactivation assays with ERα/β, GR, MR, or PR at concentrations up to 30 μM.